Tholmes



3. F. BARTHOLMES. MECHANISM FOR PRODUCING cowuuwn OSCiLLATORY momma.

APPLICATION HLED DOT. 21,1915.

maam Paten'tedAug.8,1916

4 SHEETSSHEET I.

r ynvcuiop 4 Garf'ha/mes.

G. F. BARTHOLMES. MECHANISM FOR PRODUCING COMPOUND OSCILLATORY MOTION.

APPLICATION FILED OCT. 21, 1915- Patented Aug. 8, 1916.

4 SHEETS-SHEET 2.

31 rue I 1 l'o'z- 8G g fha/mes G. F. BARTHOLMES.

MECHANISM FOR PRODUCING COMPOUND OSCILLATORY MOTION.

APPLICATION HLED OCT. 21, 9L5- 1.,193,860. Patented Aug. 8,1916.

4 SHEETS-SHEET 3.

G. F. BARTHOLMES.

MECHANISM FOR PRODUCING COMPOUND OSCILLATORY MOTION.

APPLICATION FILED OCT. 21, 1915- Patented Aug. 8, 1916.

sums-sum 4.

G1. B arfho/mes VJ Mm Witness UNITE TATTEsPA'rENT GEORGE r. naarnonmns, or'coarnvea, camronma.

mncnmrsm ron'rnonvcnve'comrouma OSCILLATORY MOTION.

Specification of Letters Patent.

Application filed ember 21, 1915. Serial No. 57,167.

I To all. whom it mafy concem:

Be it known that I, GEORGE F. BAR- THoLMns, -a citizen of the United States, re-

siding at Coalinga, in the county of Fresno, State of California, have invented certain new and useful Improvements in'Mechanism for-Producing Com ound Oscillatory Motion, ofv which the ollowing is a specifica- The present invention relates to mechanisms for producing compound oscillatory motion to tables, frames or beds, particularly in connection with mining machinery, such as concentrators, separators, amalgamators and the like, but which may also be utilized for any other kind of tables or devices requiring a similar motion.

My inventlon as applied to an apparatus for the reclamation of values, such as ores and the like, namely, ore concenteratorsand amalgamat'ors with or without a traveling belt, has for its object to provide a mecha-- in operation.

A further object isto provide an adjustable feeding device for accelerating or retarding the speed ofthe belt while in motion.

When the apparatusis an amalgamator,

over which the values have to travel, will produce a scouring effect on the values,

whereby the metalliferous particles will become exposed and more readily come in con-. tact with the mercury, the lengthof time and travel of the values over the'moving table being many times increased as com paredfwith amalgamators hav ng stationary plates. A proportional mcrease' of saved values is consequently atta ned.

A further object of' the invention is to minimize friction by the use of ball bearings running in oil bath, wherever possible.

In the accompanying drawings, one embodiment of the invention has been illustratedas applied to an ore concentrator having an endless belt for the values.

Figure 1 shows a plan view of.the concentrator with some parts broken away; Fig.2, a front elevation of Fi 1; Fig. 3, a side elevation of Fig. 1, seenf tom the left;

Fig. 4 isja plan view in larger scale of the device for adjusting the orbital or oscillatory motion of the frame and belt; Fig. 5,

asection'along line 55of Fig. 4; Bi 6, a

portion of Fig. 5 with the parts in di erent position; Fig. 7, a sectional view of one of the supports for the frame or table; Fig. 8, a longitudinal section of the belt .feed mechanism; Fig. 9, an end View of Fig. 8 seen from the right and Fig. 10, a front view of a portion of Fig. 5 showing the. graduation and Fig. 11, a modified form of the supports shown in Fig. 7

Referring now more particularly to Figs. 1-, 2 and '3 the table 20, 21 for the endless 'belt 22, is "supported on the four pillars or standards 23, the bottom frame 20 of the tablebeing provided with four feet 2% for this purpose. A cup25 for a hardened ball 26, isthreaded into the underside of each ,foot, see Fig.7, in such a manner that the table 20, 2-1 and its main inclination may be adjusted by a slight turning of the cups 25 in their feet 24. The block 27 forms the bottom race for the ball and its top surface may either be made horizontal as in Fig; 7

or' nclined as in Fig. 11. .In both cases the bottom of block 27 and 27 should be horizontal but a secondary ball race-.27 may then be introduced between the ball 26 and the block 27, this secondary ball race 27 being provided with a plurality of balls 27 for running on the block 27. The upper end of each standard 23 is made trough shaped and filledwith oil in order to provide an oil bath for the ball or balls providing a constant lubrication. The position of the blocks is adjustable by means of set screws 28, for placing them central with the orbital movement of the table. The sharp ends of the blocks or bottom races 27 are pointing inward against the longitudinal axis of the table, causing a transverse rocking thereof when the table is moved sidewise.

The upper frame 21 is hinged at one end to the lower frame 20 lpreferably on a hollow bushing through whic runs the shaft 29 for the belt drum 30. The opposite end of the frame 21 can be raised or lowered by means Patented Aug. 8, 1916.

of elevating screws 31 provided with hand wheels 32. The inclination of the surface of the belt 22 may thus be adjusted to suit the grade of the values to be treated while the belt is in motion, and as soon as the .correct inclination has been found, the upper frame 21 is clamped in this position by bolts 33 for which slots 34 are provided in legs on the upper frame 21.

At the end of the upper frame 21 another drum 35 for the belt is journaled and the upper half of the belt is moreover supported by a plurality of transversely situated rollers 36 mounted in suitable bearings on the frame. The bearings 37 for the drum 35 are carried slidably on square rods 38 secured to the end of'the upper frame 21. These rods are threaded'and by means of adjusting nuts 39, the axial position of the bearing 37 may be determined and the belt stretched. The lower half of the belt is supported on rollers 40 carried in bearings 41 on the underside of the upper frame 21. These bearings have adjusting screws 42 for positioning the rollers 40.

Beneath the head drum 30 is a trough 42.

The trough is filled with water and the head drum is partly submerged therein so that the belt is being constantly washed when passing throug Tension rods 45, crossing from one side of the lower frame to the opposite stand.- ards, tend to keep the table central. The upper ends of the rods are attached to loops 46 on the feet '24. The opposite ends are simultaneously attached to the standards 23. The rods are provided with springs inclosed in casings 47 and with turn buckles 48 for properly tensioning the springs. I have found it most advantageous to cross each .pair of rods 45, thus forming the letter X as best seen in Figs. 2 and 3. It will be obvious that after proper adjustment of these rods, the table will automatically return to its normal or central position after displacement in any direction. Instead of the spring tensioned rods, weights might be used with equal advantage to center the table.

The belt feed or drive is best seen in Figs. 1, 3, 8 and 9. A continuously running ulley 50 is secured on the main shaft 51 whic also carries a driving sprocket wheel 52 connected by chain 53 with the driven sprocket wheel 54. The latter forms a rigid part of a friction disk 55, which is secured to a spindle 56, revolubly mounted in a slidable but non-revoluble bushing 57 mounted in the housing 58. A compression spring 59 tends to push the sleeve out ofthe bearing. The outer end of the bushing 57 is threaded to receive a setting hand wheel 60, outside of which is provided a locking wheel 61. On a shaft 62, mounted in suitable bearings at right angles to spindle 56, is carried a friction wheel 63, preferably provided with a leather or rubber facing. This wheel is constructed to contact-with the flat face of the disk 55, the pressure between them being adjustable by means of the springs 59 and the wheels 60, 61. The hub of the friction wheel has an annular groove 64 for engaging with a fork 65 which can be made to travel parallel to the shaft 62 in order to change the position axially of the friction wheel 63, thus altering the relative gearing ratio of the friction wheel and the disk. By means of a telescoping shaft 66 with a pair of universal joints 67 or any other flexible shafting, the rotation of the friction disk 63 is transmitted to the worm 68 meshing with the worm wheel 69, which is secured on the shaft 29 of the main. drum 30. To start or stop the belt, all that is necessary will then be to manipulate the hand wheels 60, 61 in order to advance or retractthe friction disk relatively to the friction wheel 63. The belt may also be stopped by running the friction wheen 63 0E the edge of the disk 55' through the operation of the fork or else in a similar manner, running the friction wheel to the centerof disk 55.

The main feature of the invention, residing in 1 the mechanism for producing the compound oscillatory motion of thetable, best illustrated in Figs. 4, 5, 6, will now be described. g

Attached to the lower frame 20 through the intermediary of channel irons 70 is a socket 71 for a sleeve 72, which has here, been shown cone shaped, but may also be made spherical or parabolical. The inner surface of this sleeve is'constructed to con tact with a correspondingly shaped race ring 73, revolubly' mounted by means of balls 74 on the inner ball race 7 5, which in turn, is carried on the stud 76, eccentrically' situated on .the end of the continuouslyio tating upright shaft 77. The diameters of the sleeve 72 and the race ring 73 have been so selected, that the inner base'diameter of the sleeve 72 is slightly greater than the added eccentricity of the stud 76'and the base diameter of the race ring 73. When 4 the parts are in the position shown in Fig. 5 5, the rotation of the upright shaft will therefore have no effect on the table 20, 21. Directly the shaft 77 has been pushed upward a small amount, contact will be established between the sleeve and the race ring causing, to begin with, a slight displacement of the table in the radial direction of the eccentric. This displacement will gradually increase with'the elevation of the shaft 7 andthe race ring 73 until they arrive in the position shown in Fig. 6,- when the maximum displacement of the table has been reached, and its consequent. maximum orbital or oscillatory motion. As the springs 47 always draw the table centerwe ward, contact is assured between the sleeve 72 and the race ring 73, in whatever posi tion the table may stand, except when the shaft andthe race ring 73 are in their low ermost position. v

The shaft 77 is carried in fixed bearings 78, 79 and it is revolved by the main shaft 51 through the intermediary of bevelgears 80, 81, which may be supplied with antifriction bearings. The upright shaft 77 is non-revolubly, but axially displaceably connected with the bevel wheel 81.

The lower end of the upright shaft 77 rests on a ball 82, which is supported by'a hardened plate 83 on the upper horizontal face of a wedge 84. The plate 83 is let down in the top of the wedge, to a depth suflicient to form a well or receptacle for oil, entirely immersing the plate and providing self lubrication for the ball 82. A fixed inclined guide 85 is provided for the wedge, which may be run up or down the incline by means of adjusting wheel 86, screw shaft 87, bevel gears 88, 89 and screw 90, the latterhaving a -T-shaped head 91 engaging in a vertical,

T-slot 92 in the end of the wedge 84. On the-screw shaft 87 is provided a sliding index 96 which will show on a graduation 93 on one side of the stand 94 for the members of the wedge shifting device, the amount of radial displacement given to the table QO, 21 at any time during operation. It will be obvious that the orbital oscillatory motlon of the table maybe altered during the operation of the machine, or even entirely stopped while the belt is still running, merely by turningof the hand-wheel 86. Instead of the wedge 84 with its appurtenant parts, a cam or screw device might be used for raising and lowering shaft 77. Instead of arranging the parts 72, 73, 74- and 75 of the mechanism for producing the compound oscillatory motion, as shown in Fig. 5, the same results may be obtained by reverslng the positions of the sleeve and the race ring, that is to. say-,the sleeve may be placed eccentrically on the upright shaft 77 and the race ring attached to the lower frame 20.

I claim 1 A mechanism for producing compound oscillatory motion to a slidably sustained organ, comprising a continuously revolving body, an eccentric tapering head on said body, a. correspondingly shaped socket. for

the head in said organ, said socket having considerably greater diameter than said head and means for keeping the socket in contact. with said head.

2 A mechanism for producing compound osclllatory motion to a slidably sustained organ, comprising a continuously revolving body, an eccentric tapering head on said body, a correspondingly shaped socket for the head in said organ... said socket having considerably greater diameter than said head, means for keeping the socket in con tact with said head, and means for advancframe sustaining said table, interengaging members on'the table and on said revolving shaft, said interengaging members comprising a head on one and a socket on the other of said interengaging members, one of said interengaging members being eccentrically mounted on the end of said revolving shaft, and means for varying the amplitudeof'the oscillations.

4. In a mechanism for producing compound oscillatory motion to a slidably sustained table; a revolving shaft situated with itsaxis of revolution perpendicularly to'a frame sustaining said table, interengaging members on the frame and on said revolving shaft, said interengaging members comprising a head on one and a corresponding socket on the other of said interengaging members, one of said interengaging members being eccentrically mounted on the end of said revolving shaft, means for axially advancing one of said members relatively to the other, thus varying the amplitude of the oscillations.

5. In a mechanism for producing com 'pound oscillatory motion to a slidably sustained table; a revolving shaft situated with its axis of revolution perpendicularly to a frame sustaining said table, an eccentric having a tapered head on one end of the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping said head and socket in contact.

6. In a mechanism for producing compound oscillatory motion to a slidably sustained table; a revolving shaft ';ituated.with

its axis of revolution perpendicularly to a frame sustaining said table, an eccentric having a tapered head on one endof the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping said head and socket in contact, and other means for advancing said head axially in said socket for changing the degree of oscillatory motion while said shaft is revolving.

7. In a mechanism for producing compound oscillatory motion to a slidably sustained table; a' revolving shaft situated with its axis of revolution perpendicularly to a frame sustaining said table, an eccentric having a tapered head on one end of the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping said head and socket in contact, and other means for advancing said head axially in said socket for changingthe degree of oscillatory motion while said shaft is revolving, said other means comprising a supporting wedge for the lower end of said revolving shaft, said wedge having a horizontal upper face and an inclined lower face, a guide for said wedge with a surface inclined to correspond with said wedge, a controlling member for advancing or retracting said wedge along said inclined guide and an index connected with said controlling member for indicating the amount of such advance.

8. In a mechanism for producing-compound oscillatory motion to a slidably sustained table; a revolving shaft situated with its axis of revolution perpendicularly to a frame sustaining said table, an eccentric having a tapered head on one end of the shaft and a correspondingly shaped socketv in the frame of greater diameter than said head, and means for keeping said head and socket in contact, and other means for advancing said head axially in said socket for changing the degree of oscillatory. motion while said shaft is revolving, said other means comprising a supporting wedge for the lower end of said revolving shaft, said wedge having a horizontal upper face and an inclined lower face, a guide for said wedge with a surface inclined to correspond with said wedge, a controlling member for advancing or retracting said wedge along said inclined guide and an index connected with said controlling member for indicating the amount of such advance, an oil well being provided in the upper side of said wedge and a ball inserted between the lower end of said revolving shaft and the bottom of said oil well, thus providing continuous lubrication for said ball and shaft.

9. In a mechanism for producing com pound oscillatory motion to a slidably sus tained table; a revolving shaft situated with its axis of revolution perpendicularly to a frame sustaining said table, an eccentric having a tapered head on one end of the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping said head and socket in contact, a plurality of supporting feet for said lower frame, a wedge beneath each of said feet and a ball inserted between the wedge and the foot, and means for changing the position of the wedge of each foot for the purpose of changing the perpendicular position of the latter.

10. In a mechanism for producing compound oscillatory motion to a slidably sus-' tained table a revolving shaft situated with its axis of revolution perpendicularly'to a frame sustaining said table, an eccentric having a tapered head on one end of the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping saidv head and socket in contact, a. plurality of supporting feet for said lower frame, a wedge beneath each of said feet and a ball-inserted between the wedge and the foot, and means for changing the position of .the wedge of each foot for the purpose of changing the perpendicular position of the latter, said wedge being inclosed in an oil bath providing continuous lubrication for its corresponding ball.

11. In a mechanism for producing compound oscillatory motionto a slidably sustained table; a revolving shaft situated with its axis of revolution perpendicularly to a frame sustaining said table, an eccentric 'having a taperedhead on one end of the shaft and a correspondingly shaped socket in the frame of greater diameter than said head, and means for keeping said head and socket in contact, said means comprising a plurality of tension members, said tension members being attachedat their upper ends to one side of the lower frame and with their lower ends to the opposite side of the foundation, each of said tension members being provided with a. resilient organ and turn buckle for adjusting the resiliency thereof.

12. In a mechanism for producing com-' 

